You're retarded, aren't you?

You can't even read.

OpenBSD (Not freeBSD) is considered the most secure operating system for many reasons, at least as far as servers are concerned.

For other things we have QubesOS.

For mobile devices we have grapheneOS.

But that said, you are an imbecile who can't even read, I don't waste my time with you. 

 Oh yeah, I'm retard because of a typing mistake. And I'm still learning english, just saying